The manufacturer says:
Position the camera at your front door or hallway, then simply plug in your SD Memory Card, power cable or 9V battery then watch the camera go to work! You can use up to a 1GB on your SD Memory Card, which takes up to 30,000 images.
This covert surveillance device is motion activation and can take pictures at set intervals.
Maxwell Smart, agent 86 (lower picture), would have given up his shoe-phone for this device in a heart-beat.
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